Masao Nakamura

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Kobe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tennis ball
- Patent number 5,308,060
- Issue date May 3, 1994
- Sumitomo Rubber Industries, Ltd.
- Masao Nakamura
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Pressureless tennis ball
- Patent number 4,580,781
- Issue date Apr 8, 1986
- Sumitomo Rubber Industries, Ltd.
- Kuniyasu Horiuchi
- A63 - SPORTS GAMES AMUSEMENTS